Bolthole Index

Henry County, Iowa

Building permits, zoning and land rules in Henry County, Iowa

66Index Score / 100
#17 of 99 in Iowa

Henry County, Iowa requires county land-use approval for projects covered by its land-use laws, but we could not confirm a separate residential structural building permit1. County zoning applies outside city limits, while the Henry County Board of Health regulates private septic systems within its jurisdiction and Environmental Health supplies the septic permit application234. Every new well in Henry County also requires a well permit and inspection5.

At a glance

Building permit
County land-use approval applies; a separate residential structural building permit is unconfirmed16
Zoning approval
Henry County administers zoning outside city limits; ask the city about land inside its limits72
Septic permit
Required before installing or altering a private sewage system; the county board of health is the local authority within its jurisdiction83
Private well permit
Required, with an inspection, before constructing any well in Henry County5
RV living
Long-term occupancy on private land is unconfirmed; ask Planning and Zoning9
Owner-builder
Work on your own property is exempt from contractor registration, not building, zoning or septic requirements10
Manufactured homes
The county cannot reject one solely because it is manufactured, but site-built standards apply11
Septic soils
No mapped soils are rated free of severe limits for a conventional drain field12

Who to call

Zoning

Henry County Planning and Zoning

Land-use permits, zoning administration and enforcement, 911 addressing applications, floodplain information, and support for the Zoning Commission and Board of Adjustment

(319) 385-0746

jbuffington@henrycountyiowa.us

County Court House, 100 E Washington St. Suite 102, Mt. Pleasant, IA 52641

Septic permits

Henry County Environmental Health

Sewage-disposal and holding-tank applications, private-well construction permits and inspections, and water-testing assistance

(319) 385-1223

bhudsonruss1@gmail.com

Regional Utility Service Systems, 1501 W. Washington St. Ste 103, Mt. Pleasant, IA 52641

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Off-grid gear

Going off-grid in Henry County means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Henry County, Iowa?

Henry County Planning and Zoning reviews land-use permit applications and issues land-use permits for projects that comply with county land-use laws1. The available county material does not establish that an ordinary new home needs a separate structural building permit, so ask Planning and Zoning exactly which approvals apply to the proposed structure69. Iowa does not impose one universal building-permit rule on every private building statewide; local law controls ordinary permit administration unless a project falls within the state code's limited scope13. An owner working only on the owner's property is exempt from Iowa contractor registration, but that exemption does not waive building permits, zoning approval, septic permits, electrical or plumbing requirements, or inspections10.

Who issues Henry County building permits, and how do you reach them?

Henry County Planning and Zoning is the first stop for construction outside city limits because it administers county land-use laws and issues land-use permits for conforming projects72. Call (319) 385-0746 or email jbuffington@henrycountyiowa.us; the office is at County Court House, 100 E Washington St. Suite 102, Mt. Pleasant, IA 526419. The county publishes a zoning fee schedule, but we could not confirm the charge for a particular project; ask Planning and Zoning for the current land-use fee149. Inside a city, ask that city which building permit and zoning approval it requires because county building and zoning authority does not automatically extend inside city limits152. Private septic regulation does not simply move to a city building department: the Henry County Board of Health remains the local private-sewage authority within its jurisdiction, and Environmental Health provides the septic permit application34.

Does Henry County, Iowa have zoning?

Henry County Planning and Zoning administers and enforces county land-use laws and issues land-use permits for projects that conform to those laws71. Iowa county zoning authority applies outside the corporate limits of cities, where rules may differ by zoning district2. For land inside a city, ask the city about its zoning approval while still checking with Henry County Environmental Health about county-administered septic and well requirements235. Iowa's agricultural limitation generally exempts qualifying agricultural land, farm houses, farm barns and other structures primarily adapted to agricultural use from county zoning, although floodplain regulation can still apply16. We could not confirm parcel-specific setbacks, minimum lot size, minimum dwelling size, lot coverage or height limits; Planning and Zoning can identify the district and standards for a parcel9.

How do septic and well permits work in Henry County?

The Henry County Board of Health regulates private sewage systems within its jurisdiction, and Henry County Environmental Health provides the sewage-disposal and holding-tank applications34. A septic construction permit is required before installing or altering a private sewage-disposal system, and the administrative authority must complete a site evaluation before issuing that permit8. A new system also needs a final inspection before it is backfilled17. Public sewer availability can bar installation, repair or rehabilitation of a private system, and the administrative authority makes the final availability decision18. No mapped Henry County soil is rated free of severe limitations for a conventional drain field, so complete the site evaluation before fixing a house location12. Every well constructed in Henry County requires a well permit and inspection through Environmental Health5. For a qualifying property transfer, Iowa generally requires a certified septic inspection before transfer, subject to statutory exceptions19.

Can you live in an RV or tiny home in Henry County, Iowa?

We could not confirm whether Henry County allows long-term RV occupancy, temporary camping or a stand-alone tiny home on a rural parcel; take the parcel address and proposed use to Planning and Zoning before buying9. We also could not confirm a county minimum dwelling size or the setbacks that would govern a tiny home on a specific lot; those standards can vary by zoning district2021. A manufactured home is clearer under Iowa law: a county cannot reject it solely because it is manufactured, but the home must satisfy the permanent-foundation, setback and minimum-square-footage standards applied to a site-built single-family home on the same lot11. RV, tiny-home and manufactured-home projects using on-site wastewater still need the county-administered septic permit process within the board of health's jurisdiction38.

Building a home in Henry County: the steps, in order

  1. Give Henry County Planning and Zoning the parcel address and proposed use; confirm that the land is outside city limits, identify its zoning district and ask about zoning approval, setbacks and floodplain review29.
  1. Apply for the county land-use permit required for the project and ask whether a separate structural building permit, inspection or occupancy certificate applies19.
  1. Contact Henry County Environmental Health about public sewer availability and the septic permit application184.
  1. If a private system is allowed, complete the site evaluation and obtain the septic construction permit before installation or alteration8.
  1. Arrange the final septic inspection before backfilling the new system17.
  1. Obtain the well permit and inspection before constructing a private well5.
  1. If the driveway connects to an Iowa primary highway, obtain Iowa Department of Transportation approval before work begins22.

What should you check before buying land in Henry County?

Confirm whether the parcel is inside a city, then ask the responsible planning office about zoning approval, permitted use, setbacks and floodplain status29. Ask Henry County Planning and Zoning which land-use permit and fee apply and whether the project also needs a structural building permit614. Contact Henry County Environmental Health about the septic permit and whether public sewer is considered available; the county board of health regulates private systems within its jurisdiction3184. Complete the septic site evaluation early because no mapped county soils are rated free of severe limitations for a conventional drain field812. Confirm the county-required permit and inspection for any proposed well5. Henry County land is mostly gentle, with 89.7% at a slope of 15% or less, but that countywide figure does not replace a parcel survey or soil evaluation23.

Watch-outs

  • Do not treat a county land-use permit as proof that no separate building permit is needed; Henry County's available material does not settle the structural-permit question6.
  • A city may control building permits and zoning inside its limits, but private septic systems remain regulated by the Henry County Board of Health within its jurisdiction1523.
  • No mapped Henry County soil is rated free of severe limitations for a conventional septic drain field, and a site evaluation is required before the septic construction permit is issued128.

Sources

  1. Planning & Zoning, quoted and re-checked
  2. Iowa Code 2026, Chapter 335 — County Zoning (Iowa statewide rule), quoted and re-checked
  3. Jurisdiction of Department of Natural Resources, Iowa Code §455B.172, quoted and re-checked
  4. Henry County Environmental Health (henrycounty.iowa.gov)
  5. Environmental Health, quoted and re-checked
  6. Henry County, Iowa - Planning & Zoning, quoted and re-checked
  7. Planning & Zoning, quoted and re-checked
  8. Iowa Administrative Code Chapter 69, quoted and re-checked
  9. Henry County Planning and Zoning (henrycounty.iowa.gov)
  10. Contractor Registration, quoted and re-checked
  11. Iowa Code §335.30, Manufactured and modular homes (Iowa statewide rule), quoted and re-checked
  12. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  13. Iowa Code 2026, Chapter 103A — State Building Code (Iowa statewide rule), quoted and re-checked
  14. Planning & Zoning, quoted and re-checked
  15. Iowa Code §103A.3 — Definitions (Iowa statewide rule), quoted and re-checked
  16. Iowa Code 2026, Chapter 335 — County Zoning (Iowa statewide rule), quoted and re-checked
  17. Private sewage disposal systems, ch 69, quoted and re-checked
  18. Iowa Administrative Code chapter 69.1, quoted and re-checked
  19. Iowa Code §455B.172, Jurisdiction of department and local boards (Iowa statewide rule), quoted and re-checked
  20. Iowa Code 2026, Chapter 335 — County Zoning (Iowa statewide rule), quoted and re-checked
  21. Iowa Code 2026, Chapter 335 — County Zoning (Iowa statewide rule), quoted and re-checked
  22. Access Management (Iowa statewide rule), quoted and re-checked
  23. Share of land at 15% slope or less: Bolthole Index county data

Written October 9, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Unlike 5 of its 6 neighbors, Henry County requires a building permit for a home.

RuleHenry CountyDes Moines CountyJefferson CountyLouisa CountyWashington CountyLee CountyVan Buren County
Building permitRequiredLimitedNot requiredRequiredNot requiredLimitedNot required
County zoningYesNoNoYesNoNoNot published
Septic permitsCounty Env. HealthCounty Public HealthCounty Env. HealthCounty Public HealthCounty Env. Health Dept.County Health Dept.County Sanitarian

County locator

Henry County in Iowa

66
County map
Henry County highlighted among the Iowa counties · colored by Index score

How Henry County scores

Seclusion52100% ev.
Self-Sufficiency60100% ev.
Admin Boringness50100% ev.
Durability60100% ev.
Property Autonomy51100% ev.
Carry Cost66100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$196kTypical home
1.6%Property tax
$7,797Land / acre
38.1"Annual rain
9.7% of yrsSevere drought
9 / yr (+8)Mid-century 100°F days
15.5 daysMid-century dry spell
1.89" (+10%)Mid-century 1-day rain
1.77×Wildfire change factor
100%Forward climate coverage
$1,541Home insurance / yr
2.5% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
36,501People within 30 min
1,489,758People within 2 hr
25,773Radius comparison (15 mi)
45People / sq mi
0.1%Federal land
89.7%Land at 15% slope or less
0%Soils rated "not limited" for septic (strict USDA rating)
0 acWorkable land screen
18.8%Wooded land
35.5 tonsBiomass / forest ac
50.7°FAvg temp

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Cities and towns in Henry County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Hillsboro · New London · Olds · Rome · Salem · Wayland · Westwood · Winfield

Answers from the rulebook for Henry County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Henry County rules

  • County-wide zoningPresent (with conditions)

    County land use and zoning administered by the Henry County Planning and Zoning Department.

    • Projects must conform to the county land-use laws for the department to issue land-use permits.
    “Administer and enforce Henry County's land use laws Provide and review application forms for land use permits, and issue permits for projects which conform to the laws Receive complaints of noncompliance with zoning and nuisance laws and take enforcement actions”
  • Who permits septicCounty (with conditions)

    Private sewage disposal facilities within the Henry County board of health's jurisdiction.

    • The county board of health must apply standards at least as stringent as, and consistent with, standards adopted by the state commission.
    • The authority is subject to the county board of health's jurisdiction.
    “Each county board of health shall regulate the private water supply and private sewage disposal facilities”
  • Well permitRequired

    Construction of all wells in Henry County.

    • Construction also requires an inspection.
    • The page describes new private-well permits through the Environmental Division.
    “Residents can obtain permits to construct new private wells through the environmental division. All wells in Henry County require a permit and inspection to construct.”
    One more reviewed finding on this topic
    • Required — All wells in Henry County.
      “All wells in Henry County require a permit and inspection to construct.”
  • Permit feesPublished (with conditions)

    County zoning and land-use permit fees.

    • The page identifies a 2024 zoning fee schedule; individual fee amounts were not available in the opened text.

    fee schedule year: 2024

    “Zoning Fee Schedule (2024) Sketch Plat Application Comprehensive Plan Adopted 9-10-2009”
  • Permit processPartial

    Henry County's published land-use permit workflow administered by Planning & Zoning.

    • The page describes land-use permits and projects that conform to the laws; it does not establish a comprehensive process for every permit type or incorporated municipality.
    “Provide and review application forms for land use permits, and issue permits for projects which conform to the laws”
    One more reviewed finding on this topic
    • Published (with conditions) — Henry County land-use permit process.
      “Provide and review application forms for land use permits, and issue permits for projects which conform to the laws”

Iowa rules that apply here

  • Building permitLimited

    Construction subject to Iowa's State Building Code, including state-owned buildings, buildings in governmental subdivisions that adopt the code, certain cities over 15,000 population without a substantially conforming local code, factory-built structures, and construction covered by statewide energy-conservation provisions.

    • Iowa Code section 103A.10 makes the state building code applicable to all state-owned buildings and structures.
    • The code applies in a governmental subdivision where the governing body has enacted an ordinance accepting the code.
    • The code applies in each city with a population over 15,000 that has not adopted a substantially conforming local building code.
    • Factory-built-structure manufacture and installation provisions apply throughout Iowa.
    • Permit issuance and enforcement are administered under local law or ordinance; the state source does not establish one universal permit requirement for every building statewide.
    • A governmental subdivision may prohibit commencement of construction until a local building department issues a permit after compliance is shown.
    • The application must be signed by the owner or authorized agent and include the owner's address, a statement that the application seeks permission to construct under the code, and a statement that construction will comply with applicable energy-conservation requirements.
    “The examination and approval or disapproval of plans and specifications, the issuance and revocation of building permits, licenses, certificates, and similar documents, the inspection of buildings or structures, and the administration and enforcement of building regulations shall be the responsibility of the governmental subdivisions of the state and shall be administered and enforced in the manner prescribed by local law or ordinance. [...] Prohibit the commencement of construction until a permit has been issued by the local building department after a showing of compliance with the requirements of the applicable provisions of the state building code.”
  • Owner-builder exemptionAvailable (with conditions)

    Iowa contractor-registration requirements for an individual or business performing construction work only on its own real estate or property.

    • This is an exemption from contractor registration, not a general exemption from building, zoning, septic, electrical, plumbing, or inspection requirements.
    • The exemption also applies to individuals or businesses making less than $2,000 a year on construction work.

    annual construction earnings threshold: < 2000 USD (The source separately exempts persons working only on their own real estate or property.)

    “who work only on their own real estate or property, are not required to register.”
    One more reviewed finding on this topic
    • Available (with conditions) — A person performing work or having work performed on the person's own property, for purposes of Iowa Code chapter 91C contractor registration.
      “However, a person who earns less than two thousand dollars annually or who performs work or has work performed on the person’s own property is not a contractor for purposes of this chapter.”
  • Building code adoptedPartial

    The Iowa State Building Code, including the 2024 International Building Code adopted by reference with Iowa amendments, applies statewide to state-owned buildings and structures, qualifying state-funded construction, certain cities over 15,000 that lack a substantially equivalent local building code, and governmental subdivisions that accept the code by ordinance. Factory-built-structure provisions apply throughout Iowa.

    • In a governmental subdivision, the code generally applies only after the governing body enacts an ordinance accepting applicability and files a certified copy with the commissioner.
    • The local ordinance fixes the effective date, which must be no more than six months after adoption.
    • A governmental subdivision may withdraw after one year by ordinance, following the required public hearing and written notice; the withdrawal date must be at least 180 days after ordinance adoption, and previously issued permits are unaffected.
    • The state building code applies to state-owned buildings and structures and to newly constructed buildings and structures paid for in whole or in part with state-appropriated money but not wholly state-owned.
    • Cities with populations over 15,000 that lack a local building code substantially in accord with nationally recognized standards must enforce the state building code.
    • Factory-built-structure provisions apply throughout the state; an approved factory-built structure is deemed compliant with building regulations applicable to its manufacture and installation and is exempt from other state or local building regulations, subject to the statutory exceptions concerning professional engineering and architecture and manufactured homes.
    • The current administrative rule adopts the 2024 International Building Code by reference with amendments; detached one- and two-family dwellings, certain townhouses not more than three stories, and their accessory structures instead comply with the amended International Residential Code.

    adopted model building code: 2024 International Building Code (Adopted by reference with Iowa amendments.) · current administrative-rule effective date: 2025-09-10 (Iowa Administrative Code Chapter 481.301 source identifies ARC 9474C as effective September 10, 2025.) · local ordinance effective-date limit: <= 6 months after adoption · local withdrawal waiting period: >= 1 year after code became applicable (A governmental subdivision may withdraw only after this period has elapsed.) · withdrawal effective-date minimum: >= 180 days after ordinance adoption (Previously issued permits remain unaffected.)

    “The state building code shall be applicable: [...] In each governmental subdivision where the governing body has enacted an ordinance accepting the application of the code.”
    One more reviewed finding on this topic
    • Partial — Buildings and facilities in Henry County that are subject to Iowa's state building code.
      “661—301.1(103A) Scope and applicability. The provisions of this chapter apply to buildings and facilities subject to the state building code pursuant to Iowa Code chapter 103A, including sections 103A.10 and 103A.12, and provisions of state or federal law other than Iowa Code chapter 103A. [ARC 9474C, IAB 8/6/25, effective 9/10/25]”
  • InspectionsLimited

    Buildings and structures subject to Iowa Code section 103A.10A, including newly constructed state-owned buildings, state-board-of-regents buildings, and certain state-funded buildings.

    • Newly constructed state-owned buildings and structures subject to the state building code are subject to plan review and inspection, excluding renovations and repairs except as provided by statute.
    • Newly constructed buildings owned by the state board of regents are subject to plan review and inspection, excluding renovations and repairs except as provided by statute.
    • State-funded buildings not wholly owned by the state are subject to state plan review and inspection when the governmental subdivision has not adopted the listed codes or does not perform inspections; otherwise they must comply with the local codes and inspections.
    • For ordinary privately owned construction, inspection administration is governed by the applicable local law or ordinance.
    “All newly constructed buildings or structures subject to the state building code, including any addition, but excluding any renovation or repair of such a building or structure, owned by the state or an agency of the state, except as provided in subsection 2, shall be subject to a plan review and inspection by the commissioner or an independent building inspector appointed by the commissioner.”
  • Certificate of occupancyLimited

    Certificates of occupancy or use for buildings subject to Iowa's State Building Code and certificates approving specified buildings, facilities, or installations for licensure.

    • A local building department issues certificates of occupancy or use when required by ordinance.
    • When issued for a building constructed under the state building code, the certificate must certify conformity with the code and is in the form prescribed by the governing body of the governmental subdivision.
    • For facilities governed by Iowa Administrative Code chapter 481.280, if a certificate of occupancy is required for use, it will not be issued until the inspection fee is paid.
    • Chapter 481.280.5 applies to a certificate approving a building, facility, or installation for occupancy upon request from an owner or owner's agency when applicable rules are satisfied and all fees are paid.
    • The state sources do not require a certificate of occupancy for every building statewide.

    additional reinspection fee: 125 USD (Applies for each additional reinspection after the initial reinspection when original deficiencies remain uncorrected.)

    “Issue certificates of occupancy or use, permits, licenses, and other documents in connection with the construction of buildings or structures as may be required by ordinance. (1) A certificate of occupancy or use for a building or structure constructed in accordance with the provisions of the state building code shall certify that the building or structure conforms to the requirements of the code. The certificate shall be in the form the governing body of the governmental subdivision prescribes.”
  • Minimum dwelling sizeDistrict specific (with conditions)

    Minimum dwelling-size standards imposed by county zoning regulations on manufactured homes in Iowa.

    • County zoning under chapter 335 is optional and applies only where the county board of supervisors has adopted it.
    • The local standard must be the same standard applicable to a site-built single-family dwelling on the same lot.
    • The cited provision does not supply a statewide numeric minimum square-footage value.
    “However, a zoning ordinance or regulation shall require that a manufactured home be located and installed according to the same standards, including but not limited to a permanent foundation system, set-back, and minimum square footage, which would apply to a site-built, single family dwelling on the same lot, and shall require that the home is assessed and taxed as a site-built dwelling.”
  • Minimum lot sizeDistrict specific (with conditions)

    Minimum-lot-size requirements administered through county zoning districts in Iowa, where county zoning has been adopted.

    • County zoning is optional under §335.1.
    • Local zoning districts may have different regulations.
    • A variance may be available only under the statutory practical-difficulties requirements.
    “Area, dimensional, or other numerical limitations subject to variances include but are not limited to requirements for minimum lot size, setbacks, yard widths, height, bulk, sidewalks, fencing, signage, and off-street parking. To receive the requested area, dimensional, or other numerical variance, the property owner must prove that the practical difficulties faced are unique to the property at issue and not self-created and must also demonstrate that granting the variance will not significantly alter the essential character of the surrounding neighborhood.”
  • SetbacksDistrict specific (with conditions)

    Setback requirements administered through Iowa county zoning districts, where adopted.

    • County zoning powers apply only to land and structures outside the corporate limits of any city.
    • Local district regulations may differ by district.
    • Agricultural-use structures and floodplain activities are subject to the exceptions and conditions in §335.2.
    “Subject to section 335.2, the board of supervisors may by ordinance regulate and restrict the height, number of structures, and size of buildings and other structures, the percentage of lot that may be occupied, the size of yards, courts, and other open spaces, the density of population, and the location and use of buildings, structures, and land for trade, industry, residence, or other purposes, and may regulate, restrict, and prohibit the use for residential purposes of tents, trailers, and portable or potentially portable structures. However, such powers shall be exercised only with reference to land and structures located within the county but lying outside of the corporate limits of any city.”
  • Lot coverageDistrict specific (with conditions)

    Lot-coverage limits administered through Iowa county zoning districts, where adopted.

    • County zoning powers apply only outside city corporate limits.
    • The statute authorizes regulation of the percentage of a lot occupied but does not state a statewide percentage.
    • Agricultural-use and floodplain exceptions in §335.2 apply.
    “the percentage of lot that may be occupied”
  • Manufactured homesAllowed (with conditions)

    Placement and residential occupancy of manufactured homes under county zoning statewide in Iowa

    • A county may not disallow the proposed residential structure solely because it is a manufactured home.
    • The home must be located and installed under the same standards applicable to a site-built single-family dwelling on the same lot, including permanent foundation, setback, and minimum square footage standards.
    • The home must be assessed and taxed as a site-built dwelling.
    • A county may not require an incompatible perimeter foundation system and may not require more than one permanent foundation system.
    • Outside a manufactured home community or mobile home park, requirements may ensure visual compatibility of the permanent foundation system with surrounding residential structures.
    • Recorded restrictive covenants are not abrogated.
    • Counties may regulate transportation, water, sewerage, and other land development; the statute also bars width standards greater than twenty-four feet and certain design standards when federal standards are met.

    maximum mandated width standard: <= 24 feet (if the housing otherwise complies with 42 U.S.C. §5403)

    “A county shall not adopt or enforce zoning regulations or other ordinances which disallow the plans and specifications of a proposed residential structure solely because the proposed structure is a manufactured home. However, a zoning ordinance or regulation shall require that a manufactured home be located and installed according to the same standards, including but not limited to a permanent foundation system, set-back, and minimum square footage, which would apply to a site-built, single family dwelling on the same lot, and shall require that the home is assessed and taxed as a site-built dwelling.”
  • Accessory dwellingsAllowed (with conditions)

    City regulation of accessory dwelling units statewide in Iowa, within a zoning district where a single-family residence is an allowed principal use

    • At least one accessory dwelling unit must be allowed on the same lot as a single-family residence.
    • The accessory dwelling unit must comply with applicable building regulations under chapter 103A.
    • The unit may not exceed 1,000 square feet or 50 percent of the size of the single-family residence, whichever is larger; unfinished basements are excluded from the size calculation.
    • Historic-building-code restrictions, deed restrictions, and common-interest-community rules may limit or prohibit construction or use.
    • A manufactured or mobile home used as the accessory dwelling unit must be converted to real property by placement on a permanent foundation and assessed for real-estate taxes under section 435.26.
    • A historic-preservation area may regulate the unit to the extent the city or commission determines it incongruous and records its reasons.
    • Effective July 1, 2026.

    maximum accessory dwelling unit size: 1,000 square feet or 50% of the single-family residence, whichever is larger (unfinished basements excluded from the size calculation)

    “A city shall allow a minimum of one accessory dwelling unit on the same lot as a single family residence within a zoning district where a single family residence is an allowed principal use, in accordance with the following conditions:”
    One more reviewed finding on this topic
    • Allowed (with conditions) — County regulation of accessory dwelling units statewide in Iowa, within a zoning district where a single-family residence is an allowed principal use
      “A county shall allow a minimum of one accessory dwelling unit on the same lot as a single family residence within a zoning district where a single family residence is an allowed principal use, in accordance with the following conditions:”
  • Septic permitRequired

    Installation or alteration of private sewage disposal systems (PSDSs) statewide in Iowa, including systems serving four homes or fewer or fewer than 15 people.

    • A construction permit issued by the administrative authority must be obtained before construction.
    • The administrative authority is the Iowa DNR or the local county board of health.
    • Local boards of health have primary responsibility for PSDSs serving four homes or fewer or fewer than 15 people; the Iowa DNR has primary responsibility for larger public systems.
    • Repair of existing PSDS components that does not change treatment or disposal of the waste is not considered an alteration, but discharge restrictions continue to apply.
    • When a publicly owned treatment works is available, or a local ordinance requires connection, a PSDS may not be installed, repaired, or rehabilitated; a POTW may be considered unavailable when it is more than 200 feet from the proposed building or exterior drainage facility, subject to the administrative authority’s final determination.
    • When a POTW is unavailable, every building where persons generate domestic sewage must be provided with an approved PSDS; a holding tank may be used only if all other PSDS options are impractical.
    • All constructed or altered PSDSs must comply with Chapter 69, and newly constructed systems require an administrative-authority final inspection before backfilling.
    • Systems discharging to designated waters of the state or subsurface drainage tile must comply with NPDES General Permit No. 4 and submit a Notice of Intent before use.

    POTW distance threshold: <= 200 feet (A POTW may be considered unavailable when it is more than 200 feet from the proposed building or exterior drainage facility.) · regulated residential scale: 4 homes or fewer or less than 15 people (Larger public systems are primarily regulated by the Iowa DNR.)

    “69.1(4) Construction permit required. No PSDS shall be installed or altered as described in 69.1(3)“b” unless a construction permit issued by the administrative authority is obtained prior to construction. PSDS installation shall be in accordance with these rules.”
    3 more reviewed findings on this topic
    • Required — Installation or alteration of a private sewage disposal system in Henry County, including systems serving four homes or fewer or fewer than 15 people.
      “Construction or alteration. All constructed or altered PSDSs shall comply with this chapter. Alteration includes any changes that affect the treatment or disposal of the waste. Repair of existing components of a PSDS that do not change the treatment or disposal of the waste are not considered alterations. [...] No PSDS shall be installed or altered as described in 69.1(3) “b” unless a construction permit issued by the administrative authority is obtained prior to construction.”
    • Required — Installation or alteration of a private sewage disposal system in Henry County, Iowa.
      “69.1(4) Construction permit required. No PSDS shall be installed or altered as described in 69.1(3) “b” unless a construction permit issued by the administrative authority is obtained prior to construction. PSDS installation shall be in accordance with these rules.”
    • Required — Construction or alteration of private sewage disposal systems in Henry County, under Iowa's statewide private sewage disposal system rules.
      “69.1(4) Construction permit required. No PSDS shall be installed or altered as described in 69.1(3)“b” unless a construction permit issued by the administrative authority is obtained prior to construction. PSDS installation shall be in accordance with these rules.”
  • Septic inspectionRequired

    Private sewage disposal systems serving buildings with one through four dwelling units, before qualifying ownership transfers statewide.

    • Inspection is required before transfer of ownership, including seller-financed real estate contracts.
    • The county recorder may not record the deed or conveyance document without a certified inspector report, unless weather or temporary physical conditions prevent inspection and the buyer executes a binding acknowledgment.
    • The requirement applies to sale, exchange, real estate contract, or other purchase of real estate and improvements.
    • Exceptions include specified court-ordered, foreclosure-related, fiduciary, family, demolition, recently installed system, partition, tax-sale, low-consideration, and qualifying family-entity transfers.
    • The septic tank must be opened and pumped at inspection, unless evidence shows it was properly pumped within three years before inspection by a licensed commercial septic tank cleaner.
    • A failing system must be renovated; a properly treating system without an unsanitary condition need not meet current construction standards.
    • Only a department-certified inspector may conduct the inspection.
    • An inspection is valid for two years for ownership transfers during that period.

    dwelling units: 1-4 · inspection validity: 2 years (for ownership transfers during that period) · prior septic pumping evidence: <= 3 years (must be by a department-licensed commercial septic tank cleaner) · civil penalty for fraudulent report: 5000 USD (and certification suspension for one year)

    “If a building where a person resides, congregates, or is employed is served by a private sewage disposal system, the sewage disposal system serving the building shall be inspected prior to any transfer of ownership of the building.”
  • Mandatory utility hookupConditional

    Private sewage disposal systems where a publicly owned treatment works is available.

    • A private system may not be installed, repaired, or rehabilitated where a publicly owned treatment works is available or a local ordinance requires connection.
    • A POTW may be considered unavailable when it, or a connected building or exterior drainage facility, is more than 200 feet from the proposed building or facility.
    • Final availability is determined by the administrative authority.
    • When a POTW becomes available within 200 feet, connection is required within the timeframe or under conditions set by the administrative authority.
    • When a POTW is unavailable, occupied or used buildings must have an approved private sewage disposal system.

    POTW distance: > 200 feet (The administrative authority makes the final determination of availability.)

    “When a POTW becomes available within 200 feet, any building then served by a private sewage disposal system shall be connected to said POTW within a time frame or under conditions set by the administrative authority.”
  • Agricultural exemptionConditional

    Land, farm houses, farm barns, farm outbuildings, and other buildings or structures primarily adapted by reason of nature and area for agricultural purposes, while used for those purposes, under county ordinances adopted pursuant to Iowa Code chapter 335.

    • The exemption applies except to the extent required to implement section 335.27.
    • An ordinance may still apply to any structure, building, dam, obstruction, deposit, or excavation in or on the floodplains of any river or stream.
    • The county may not require an application, approval, or fee for the ordinance to be deemed inapplicable under this section.
    • Qualifying land, farm houses, farm barns, farm outbuildings, or other buildings or structures may qualify independently or in combination with other agricultural uses.
    • Land enrolled in a soil or water conservation program is considered land primarily adapted for agricultural purposes.
    • The exemption concerns ordinances adopted under chapter 335; chapter 335 applies to a county at the option of its board of supervisors.
    “no ordinance adopted under this chapter applies”
  • Subdividing landRegulated (with conditions)

    Subdivision of land in Iowa by repeated or simultaneous division into three or more parcels, subject to statutory exceptions and local review.

    • A subdivision plat is required when a tract is subdivided by repeated divisions or simultaneous division into three or more parcels described by metes and bounds for which no plat of survey is recorded.
    • A subdivision plat is not required when land is divided by conveyance to a governmental agency for public improvements.
    • Local cities and counties may establish and enforce ordinances regulating division and use of land within the statutory framework.

    minimum parcels triggering subdivision plat: >= 3 parcels (A plat is not required for division by conveyance to a governmental agency for public improvements.)

    “A subdivision plat shall be made when a tract of land is subdivided by repeated divisions or simultaneous division into three or more parcels”
  • county zoning authorityGeneral

    Iowa counties may adopt zoning ordinances for land and structures within the county but outside the corporate limits of any city.

    • Chapter 335 applies to any Iowa county at the option of its board of supervisors.
    • The zoning power is subject to Iowa Code section 335.2: ordinances generally do not apply to agricultural land, farm houses, farm barns, farm outbuildings, or other structures primarily adapted for agricultural purposes while so used, except that ordinances may apply to structures, buildings, dams, obstructions, deposits, or excavations in or on river or stream floodplains.
    • A county may not require an application, approval, or fee for an ordinance to be deemed inapplicable to qualifying agricultural land or structures.
    • A county may not regulate, restrict, or prohibit the location of permanent buildings or temporary structures used for consumer-fireworks sales pursuant to section 10A.519 in locations zoned commercial or industrial.
    • The board of supervisors may divide the county into zoning districts, and regulations may differ among districts.
    • Regulations and restrictions require public-hearing and notice procedures under sections 335.6 and 331.305; district boundaries must identify the affected township and section and, if possible, streets or roads.
    • Energy-conservation and solar-access objectives do not require zoning in a county that did not have zoning before July 1, 1981.
    “applicable to any county [...] at the option of the board of supervisors [...] outside of the corporate limits of any city.”
  • county building authorityGeneral

    Iowa counties may adopt, administer, and enforce county building codes and may administer and enforce the state building code for buildings, including residential construction, in county jurisdiction outside incorporated municipalities, subject to statutory limitations.

    • A county building code may not apply within the incorporated area of a city except at the city's option.
    • A county building code may not apply within a city's two-mile limit under Iowa Code §414.23 to the extent the city has adopted a building code within that two-mile limit.
    • A county building code may not apply to farm houses or other farm buildings primarily adapted for agricultural purposes while so used or under construction for that use.
    • Administration and enforcement are conducted as prescribed by local law or ordinance.
    • The state building code applies in a governmental subdivision only after the governing body adopts an ordinance accepting it and files a certified copy with the commissioner; the ordinance fixes the effective date, which must be no more than six months after adoption.
    • A local building department may prohibit commencement of construction until a permit is issued after showing compliance with applicable state building-code provisions.
    • Thermal-efficiency energy-conservation standards apply to construction containing heated or cooled enclosed space, but the commissioner must provide appropriate exceptions where applying an energy-conservation requirement would be impractical.
    “The power to adopt, administer, and enforce the state building code shall be exercised in accordance with chapter 103A. The power to adopt by ordinance, administer, and enforce a county building code, is subject to the following restrictions: a. A county building code shall not apply within the incorporated area of a city except at the option of the city, and shall not apply within a city’s two-mile limit referred to in section 414.23, to the extent that the city has adopted a building code within the two-mile limit. b. A county building code shall not apply to farm houses or other farm buildings which are primarily adapted for use for agricultural purposes, while so used or under construction for that use.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Local zoning — Whether municipalities or townships within Henry County exercise separate zoning authority.
  • Zoning districts — Henry County zoning districts.
  • Building height — Building height under county zoning.
  • Living in an RV — Long-term residential occupancy of a recreational vehicle, camper, or travel trailer on private land in Henry County, Iowa, including unincorporated rural parcels.
  • Camping on your land — Temporary camping on private land in Henry County.
5 more unanswered
  • Tiny homes
  • Off-grid sanitation
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Henry County, Iowa

Is Henry County a good place to live off-grid or homestead?

Henry County scores 66/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and mixed durability signals.

Do you need a building permit in Henry County, Iowa?

Henry County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Henry County Environmental Health. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Henry County, Iowa?

Land in Henry County runs about $7,797 per acre, based on the latest county data.

What is the water situation in Henry County?

Henry County gets about 38.1" of rain a year, with severe drought in roughly 9.7% of years.

How remote is Henry County?

A representative private-land location has about 36,501 people within a 30-minute drive and 1,489,758 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Henry compares in Iowa

Compare side-by-side →See all 99 Iowa counties ranked →